What is the battery model for the Audi A6 key?

2 Answers
SanIsaac
09/06/25 2:29am
Audi A6 key battery model is CR2032. CR2032 is a lithium manganese dioxide battery, named according to the IEC standard. Among them: C- indicates the chemical battery system with lithium metal as the negative electrode and manganese dioxide as the positive electrode; R- indicates that the shape of the battery is cylindrical, if it is square, F is used instead; 20 indicates that the diameter of the battery is 20mm; 32 represents the height of the battery is 3.2mm. The nominal voltage is 3.0V, the endpoint voltage is 2.0V, and the rated capacity ranges from 200-240mAh, varying depending on the manufacturer's level. The shelf life of CR2032 is usually 5 years. If the manufacturing level of the production plant is not high, or the quality control is poor, its lifespan will be greatly shortened. Domestic first-tier brand batteries can basically guarantee this lifespan. If the usage environment is ideal (sealed, room temperature, no moisture, etc.), its lifespan can be further extended to 8 years, or even 10 years. Generally, replacing the car key battery only requires the following 3 steps: Step 1: Remove the mechanical key. Press the lock catch on the side of the smart key to remove the mechanical key. Step 2: Open the battery cover. After removing the mechanical key, you can see the top of the smart key, which has a deep groove and a shallow groove. The deep groove is the keyhole, and the shallow groove is used to open the battery cover. Insert the mechanical key into the shallow groove and pry it outward with force to open the battery cover. After opening, you can see the button battery. Gently pry it, and the battery will come out. Step 3: Replace the new battery. Install the new battery, then reattach the battery cover and the mechanical key in sequence, and the key battery replacement is complete.
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PaisleeMarie
09/18/25 2:33am
I remember when replacing the key fob battery for my Audi A6, I found it uses a CR2032 lithium battery. It's a very common type that you can easily find in supermarkets or electronics stores. Changing it yourself is super simple: just use a small tool to gently pry open the key fob cover, locate the battery compartment; after removing the old CR2032, make sure to insert the new battery with the positive side facing up, then snap the cover back on. The battery typically lasts one to two years - when it's running low, you'll notice the key becoming less responsive, like delayed unlocking or failure to start the car. Audi's key design is quite user-friendly, but be careful not to use excessive force when opening it to avoid damaging the plastic clips. Keeping a spare CR2032 at home is really practical - they're inexpensive and convenient, saving you a trip to the store in emergencies. Avoid buying off-brand batteries as poor-quality ones may have shorter lifespans and could even pose a short-circuit risk.
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